Kueski

Kueski is a Mexican financial technology company founded in 2012 and headquartered in Guadalajara, Jalisco, offering online consumer credit across Mexico. Its flagship product, Kueski Pay, is a buy-now-pay-later (BNPL) payment method that lets shoppers buy without a credit card and repay in biweekly installments at thousands of online and physical merchants. Kueski also offers personal loans and cash advances. For merchants, Kueski Pay is distributed as e-commerce platform plugins (WooCommerce, Shopify, VTEX IO, Magento, PrestaShop, Tiendanube, T1 Paginas) plus a JavaScript widget library and a bearer-token HTTP merchant API for order creation, order synchronization and refunds. Kueski operates as a SOFOM E.N.R. regulated entity registered with Mexico's CONDUSEF.

Kueski publishes 2 APIs on the APIs.io network. Tagged areas include Company, Payments, Buy Now Pay Later, Lending, and Fintech.

Kueski’s developer surface includes documentation, getting-started guide, support, engineering blog, signup flow, changelog, authentication, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

30.6/100 thin ▬ flat Agent 5/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

2 APIs

Company Payments Buy Now Pay Later Lending Fintech Financial-Services Consumer Credit E-Commerce Checkout Mexico Latin America

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 30.6/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 9.3 / 17

Access Clarity 5.8 / 17

Operational Transparency 3.8 / 11

Contract Governance 0.5 / 10

Discoverability 5.8 / 9

Regulatory Posture 5.9 / 15

Agent readiness — 5/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/kueski: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Kueski Pay Widget Configuration API

The HTTP API behind the Kueski Pay merchant widgets. The widgets.js library authenticates with the merchant public key as an HTTP bearer token and reads merchant configuration a...

Kueski Pay Merchant Orders API

The merchant-facing Kueski Pay order API used by the first-party e-commerce plugins. It validates merchant API keys, creates a Kueski Pay order and returns a hosted checkout cal...

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Kueski Authentication

http · 2 schemes

SECURITY

Kueski Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Lifecycle

Components

Conventions

ErrorCatalog

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 4

Status, limits, changes, and where to get help

Support

HelpCenter

StatusPage

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: kueski
name: Kueski
x-enrichment:
  date: '2026-08-04'
  status: enriched
  artifacts_added: 12
  pass: local-v1
description: Kueski is a Mexican financial technology company founded in 2012 and headquartered in Guadalajara, Jalisco, offering
  online consumer credit across Mexico. Its flagship product, Kueski Pay, is a buy-now-pay-later (BNPL) payment method that
  lets shoppers buy without a credit card and repay in biweekly installments at thousands of online and physical merchants.
  Kueski also offers personal loans and cash advances. For merchants, Kueski Pay is distributed as e-commerce platform plugins
  (WooCommerce, Shopify, VTEX IO, Magento, PrestaShop, Tiendanube, T1 Paginas) plus a JavaScript widget library and a bearer-token
  HTTP merchant API for order creation, order synchronization and refunds. Kueski operates as a SOFOM E.N.R. regulated entity
  registered with Mexico's CONDUSEF.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://cdn.prod.website-files.com/614d688b383096276930acef/64e2c5d130257b8c874270de_kueskipay.svg
url: https://raw.githubusercontent.com/api-evangelist/kueski/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-04'
modified: '2026-08-04'
tags:
- Company
- Payments
- Buy Now Pay Later
- Lending
- Fintech
- Financial-Services
- Consumer Credit
- E-Commerce
- Checkout
- Mexico
- Latin America
tags_raw:
- Company
- Payments
- Buy Now Pay Later
- Lending
- Fintech
- Financial Services
- Consumer Credit
- E-Commerce
- Checkout
- Mexico
- Latin America
apis:
- aid: kueski:kueski-pay-widget-configuration-api
  name: Kueski Pay Widget Configuration API
  description: The HTTP API behind the Kueski Pay merchant widgets. The widgets.js library authenticates with the merchant
    public key as an HTTP bearer token and reads merchant configuration and installment-messaging data used to render the
    product and cart widgets. Separate production and testing (sandbox) hosts are selected by the widget sandbox parameter.
  humanURL: https://www.kueskipay.com/guias-de-integracion
  baseURL: https://api.kueskipay.com
  tags:
  - Payments
  - Buy Now Pay Later
  - Widgets
  - Checkout
  - Configuration
  properties:
  - type: Documentation
    url: https://github.com/kueski-dev/Dev-Center/wiki
  - type: Authentication
    url: authentication/kueski-authentication.yml
  - type: ErrorCatalog
    url: errors/kueski-problem-types.yml
- aid: kueski:kueski-pay-merchant-orders-api
  name: Kueski Pay Merchant Orders API
  description: The merchant-facing Kueski Pay order API used by the first-party e-commerce plugins. It validates merchant
    API keys, creates a Kueski Pay order and returns a hosted checkout callback URL for redirect, synchronizes the status
    of previously created orders (merchants poll; Kueski publishes no webhook surface), and issues full or partial refunds
    against a payment. Authentication is an HTTP bearer token carrying the merchant API key.
  humanURL: https://github.com/kueski-dev/Dev-Center/wiki/WooCommerce
  baseURL: https://woocommerce-middleware-go.production-pay.kueski.com/api/v1
  tags:
  - Payments
  - Order
  - Refunds
  - Buy Now Pay Later
  - Checkout
  tags_raw:
  - Payments
  - Orders
  - Refunds
  - Buy Now Pay Later
  - Checkout
  properties:
  - type: Documentation
    url: https://github.com/kueski-dev/Dev-Center/wiki/WooCommerce
  - type: Sandbox
    url: sandbox/kueski-sandbox.yml
  - type: Authentication
    url: authentication/kueski-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.kueski.com/
- type: DeveloperPortal
  url: https://github.com/kueski-dev/Dev-Center/wiki
- type: Documentation
  url: https://www.kueskipay.com/guias-de-integracion
- type: GettingStarted
  url: https://www.kueskipay.com/para-comercios
- type: GitHubOrganization
  url: https://github.com/kueski-dev
- type: Support
  url: https://preguntas.frecuentes.kueski.com/hc/es/categories/14632860970907-Kueski-Pay
- type: HelpCenter
  url: https://kueskib2b.zendesk.com/hc/es-mx
- type: Blog
  url: https://blog.kueski.com/comercio-electronico/
- type: SignUp
  url: https://www.kueskipay.com/registro-comercios
- type: Login
  url: https://negocios.kueski.com/login
- type: TermsOfService
  url: https://www.kueskipay.com/tyc
- type: PrivacyPolicy
  url: https://preguntas.frecuentes.kueski.com/hc/es/articles/12385599806747-PRIVACY-NOTICE-FOR-THIRD-PARTIES-AND-COMMERCIAL-ALLIES-OF-KUESKI-SAPI-DE-CV-SOFOM-ENR
- type: StatusPage
  url: https://status.kueski.com/
- type: Lifecycle
  url: lifecycle/kueski-lifecycle.yml
- type: ChangeLog
  url: changelog/kueski-changelog.yml
- type: Packages
  url: packages/kueski-packages.yml
- type: Components
  url: components/kueski-components.yml
- type: Conventions
  url: conventions/kueski-conventions.yml
- type: Authentication
  url: authentication/kueski-authentication.yml
- type: ErrorCatalog
  url: errors/kueski-problem-types.yml
- type: Conformance
  url: conformance/kueski-conformance.yml
- type: Sandbox
  url: sandbox/kueski-sandbox.yml
- type: WellKnown
  url: well-known/kueski-well-known.yml
- type: DomainSecurity
  url: security/kueski-domain-security.yml
- type: LLMsTxt
  url: llms/kueski-llms.txt

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